“Two Sheriff's Office Patrols
Claim They Saw Flying Saucer”, 10 April 1950
(The Modesto Bee and News-Herald, California)
Seven persons, including two Sheriff's Office Patrols, sighted a disk shaped UFO over Monterey County, California on 9 April 1950, according to the article:
http://news.google.com/newspapers?id=9U0hAAAAIBAJ&sjid=K4IFAAAAIBAJ&pg=4304,1727727
Quote from the article:
“One of the deputies, Ted Cross of Monterey, was driving a prisoner to the county jail when he said he saw the saucer.”
The UFO had a diameter of 10 meters (30 feet).